<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../jquery.min.js"></script>
</head>
<body>
    <div class="head"></div>
    <div class="content">中间的内容</div>
    <div class="foot"></div>
    <script>


        $.ajax({
            url:"head.html",
            success(res){
                // console.log(res);
                document.querySelector(".head").innerHTML = res;
            }
        })


        // 发送ajax请求html然后填充到.foot容器里；
        $(".foot").load("foot.html");

    </script>
</body>
</html>